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The climate of Chicago is classified as hot-summer ... The average date for last measurable snowfall (≥0.1 in or 0.25 cm) is April 1. ... The first freeze of the ...
The Chicago blizzard of 1979 was a major blizzard that affected northern Illinois and northwest Indiana on January 13–14, 1979. It was one of the largest Chicago snowstorms in history at the time, with 21 inches (53 cm) of snowfall in the two-day period. [ 1 ]
When Chicago was founded in 1837, most of the early building was around the mouth of the Chicago River, as can be seen on a map of the city's original 58 blocks. [104] The overall grade of the city's central, built-up areas is relatively consistent with the natural flatness of its overall natural geography, generally exhibiting only slight ...
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A map of the United States detailing the record-low temperatures for various cities on January 21, 1985. The 1985 North America cold wave [1] was a meteorological event which occurred in January 1985 as a result of the shifting of the polar vortex farther south than is normally seen. [1]
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Last frost dates are estimated based on historical data of when the last freeze – when temperatures drop between 29° to 32°F, cool enough to kill tender plants – is likely to occur ...
Date of Last Freeze (Average Last Freeze) (1999–2003) – contour-based national map (available from March to May) showing the statistical last freeze in each region by average date Frost/Freeze Warning (1999–2003, 2016–2022) – regional map outlining areas under Frost Advisories and Freeze Warnings issued by the National Weather Service